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APPEC Town Meeting 2025, September 23–24 at Universidad de Zaragoza

Town Meeting 2025: Preparation of the 2027-2036 Strategic Roadmap

As input for the preparation of the roadmap, a community survey took place beginning of this year. A briefing book including all Astroparticle Physics topics from the survey will be prepared by the APPEC Scientific Advisory Committee and released this summer, stay tuned!

During the APPEC Town Meeting, we will further discuss each of these topics with respect to the European and international context, and the new developments in Astroparticle Physics and in the neighbouring fields that will shape the strategic recommendations of the next roadmap.

This event includes plenary talks as well as round table discussions for each topic, to ensure a large participation of the community to shaping the future of Astroparticle Physics strategic orientations.

The discussions at this Town Meeting will serve as input for the European Astroparticle Physics Strategy 2027-2036.

Meeting Website

35th Midwest Relativity Meeting and “EricFest”, October 31 – November 2, 2025 at University of Guelph

The 35th Midwest Relativity Meeting will be held at the University of Guelph on October 31 to November 2 (Friday to Sunday), 2025. The last day will be a scientific celebration of Eric Poisson's 60th birthday with invited speakers.

The Midwest Relativity Meetings bring together researchers from across the Midwest and beyond to discuss a broad range of topics in gravitational physics, including cosmology, gravitational waves, numerical relativity, and quantum gravity. The primary focus of this meeting is on graduate students and postdocs, all of whom are encouraged to give talks. The Blue Apple Award, sponsored by APS DGRAV, will be given for the best graduate student talk.

Meeting Website

XV ET Symposium, May 26-30 2025 in Bologna

The XV ET Symposium will take place in Bologna from May 26th until May 30th. 
The ET Symposium kicks off on Monday 26th after lunchtime and will end on Friday 30th at lunchtime.

The Symposium will be organized in parallel sessions, hosting workshops managed by the ET boards (EIB, ISB, OSB, and SPB), and plenary sessions. The complete timetable is under construction and will soon be released.

A social event for early career scientists will be organized during the Symposium week. More information will be available soon.

The abstract submission for talks & posters is open now. The submission deadline for your contributions is the 31st of March.

The registration is now open.

The fee for in-person participants is €400 (VAT included) and includes the social dinner. The limit for in-person attendees is 380 people.

Participants can also attend the Symposium remotely via Zoom. While registration is required, there is no fee for online participation.

Symposium Website

Fourth MaNiTou Summer School on Gravitational Waves:A new window to the Universe, Jun 30 – July 5, 2025, Marseille

The school is collaboratively organized by scientific communities involved in Gravitational Waves, from 3 French locations in Southern France, namely Marseille, Nice and Toulouse, thus the MaNiTou name for the school.

The school will take place in Marseille this year, on the Luminy Campus of Aix Marseille Université, in the beautiful Calanques National Park (see here). It will be held in English.

Goals of the school

The school will cover the emerging field of gravitational wave detection and of its scientific exploitation. Following their discovery by the LIGO/Virgo consortia, many other gravitational wave detections are expected at the existing and future gravitational antennas. They will open up a new window of exploration, sometimes unique and sometimes complementary to what other messengers such as electromagnetic radiation (radio, IR, visible, UV, X-rays, gamma rays) and neutrinos can reveal of the physics at work in our Universe. The objective of the school is to provide the students with a solid introduction to most aspects of this interdisciplinary field in accelerated expansion 🙂

The school is open in priority to Master and PhD students, and also to young or not so young scientists who would like to get better acquainted with Gravitational Waves.

For attendees to fully benefit from the school programme, it is highly recommended that they have had at least an introductory exposure to General Relativity before. We also strongly suggest that prior to attending the school, the participants read some of the references that can be found here.

School Programme

GR and GW Theorie
Panorama of possible GW sources
GW Data Analysis
GW Instruments
– On Earth (LIGO/Virgo/Kagra, ET)
– In Space (LISA)
Hands on data
GW to study the Universe
– Astrophysics
– Cosmology
– Fondamental Physics
– Multi-Messager Astronomy
Advanced seminars
– Latest news from LIGO/Virgo/Kagra
– GW and Nuclear Physics
– Pulsar Timing Arrays (PTA)
– AI techniques
Preliminary list of speakers

  • Quentin Baghi – AstroParticule et Cosmologie (APC), Paris
    Space-based GW detectors: LISA
  • Oualid Chaibi – Artemis, Observatoire de la Côte d’Azur, Nice
    Ground-based GW interferometers and current observations
  • Francesca Gulminelli – Laboratoire de physique corpusculaire (LPC), Caen
    GWs and nuclear physics
  • Natalia Korsakova – AstroParticule et Cosmologie (APC), Paris
    Introduction to AI technique and AI applications to GWs
  • Astrid Lamberts – Artemis et Lagrange, Observatoire de la Côte d’Azur, Nice
    Astrophysics of GW sources
  • Frédérique Marion – Laboratoire d’Annecy de Physique des Particules (LAPP), Annecy
    Introduction to GW data analysis
  • Sylvain Marsat – Laboratoire des 2 infinis – Toulouse (L2IT), Toulouse
    Hands on GW data analysis
  • Simone Mastrogiovanni – Italian Institute for Nuclear Physics (INFN), Rome
    Cosmology with GWs
  • Joseph Romano – University of Texas Rio Grande Valley, Texas, USA
    Panorama of GW sources PTA science and stochastic background analysis
  • Mairi Sakellariadou – King’s College London, London
    Fundamental physics with GWs
  • Simone Speziale – Centre de Physique Théorique (CPT), Marseille
    GW Theory


School organization

In order to make the School efficient for the attendees in terms of knowledge transfer and training interaction with the scientists in charge of the different activities of the school, the attendance is limited to about 80 to 90 participants, not including organizers and teachers. If more than 90 people apply to the School, a selection will be applied based on the criteria outlined on the Registration page.

The School has no online attendance option. All participants are expected to attend in-presence.

No fee is required to attend the School.

The School will provide coffee breaks and lunches to all participants. Dinners, travel and accommodation expenses are not covered.

However, accommodation free of charge will be provided at CROUS at Luminy Campus for up to 50 master and PhD students who request it in the registration form. For more information about this opportunity and the selection, please see the Accommodation Section.

Moreover, since the school is labelled by CNRS as “Ecole Thématique”, the expenses to attend the school for CNRS employees (staff CNRS people and people with a CNRS term contract [PhD student, Postdoc,…]) will also be covered. Please do not forget to mention in the registration form if that case applies to you!


Apply to the school

To apply, please go to the Registration (Inscription) tab or directly follow the link here

Pre-registration will be open from March 4th to April 6th.
The pre-registered candidates will be informed of the result of the selection process during the first week of May.

School Website

SIGRAV2025, September 8-12, Milano

The Italian Society of General Relativity and Gravitation announces the 26th SIGRAV Conference, hosted by the University of Milano-Bicocca, to be held in Milan (Italy) from September 8th to 12th, 2025. 

The conference will cover various aspects of Classical and Quantum Gravity, including tests of General Relativity, cosmology, gravity experiments, and gravitational waves from experimental, theoretical, and data-analysis perspectives.

Key Dates

  • Abstract submission deadline: 31 May 2025
  • Program announcement: 30 June 2025
  • Registration deadline (including fee payment): 15 July 2025
  • Conference! 8-12 September 2025

Plenary SPEAKERS

  • Stephanos Aretakis (Toronto, Canada)
  • Tessa Baker (Portsmouth, UK)
  • Emanuele Berti (Johns Hopkins, USA)
  • Camille Bonvin (Geneva, Switzerland)
  • Alejandra Castro (Cambridge, UK)
  • Elena Cuoco (Bologna, Italy)
  • Simone Dell’Agnello (INFN Frascati, Italy)
  • Ciriaco Goddi (Cagliari, Italy)
  • Ruth Gregory (King’s College London, UK)
  • Zoltan Haiman (Vienna, Austria)
  • Mercedes Martin Benito (Madrid, Spain)
  • Annalisa Murgia (Milan, Italy)
  • Michele Vallisneri (ETH Zurich, Switzerland)

PuBLIC Round Table

Emanuele Berti (Johns Hopkins, USA)
Marco Drago (Rome, Italy)
Fulvio Ricci (Rome, Italy)

Conference Website

Black Holes & Cosmology, August 5-9, 2025 at University of Iceland

The purpose of the conference Black Holes & Cosmology is to bring together world-renowned experts as well as junior researchers working on theoretical and observational aspects of black holes, particularly (but not limited to) their rôle in cosmology.

Topics include:

  • Dark Matter
  • Structure Formation
  • Primordial Black Holes
  • Gravitational-Wave Astronomy
  • Quantum Aspects of Black Holes

This event will take place at the University of Iceland in Reykjavik between the 5th and 8th of August 2025. We look forward to meet you!

Invited Speakers include (* = TBC):

  • Andreas Albrecht* (UCD)
  • Earl Bellinger (Yale)
  • Alessandra Buonanno* (AEI)
  • Matt Caplan (ISU)
  • Nico Cappelluti (UM)
  • Bernard Carr (QMUL)
  • Sébastien Clesse (ULB)
  • Nelson Christensen (Artemis & OCA)
  • Gia Dvali (MPP & LMU)
  • Alexander Dolgov (NSU & Unife)
  • Netta Engelhardt (MIT)
  • Glennys Farrar* (NYU)
  • Katherine Freese* (UTAUS)
  • Enrique Gaztanaga (UoP)
  • Sarah Geller (MIT)
  • Reinhard Genzel* (MPE & UCB)
  • Marat Gilfanov (MPA)
  • Ruth Gregory (KCL)
  • Alan Guth* (MIT)
  • Michael Hawkins (ROE)
  • Dan Hooper (UW)
  • David Kaiser (MIT)
  • Sasha Kashlinsky (NASA)
  • William Kinney (UB)
  • Alexander Kusenko (UCLA)
  • Julien Lavalle (UoM)
  • Guido Müller* (AEI)
  • Priyamvada Natarajan (Yale)
  • Samaya Nissanke* (UvA & GRAPPA)
  • Mairi Sakellariadou (KCL)
  • Lisa Randall* (Harvard)
  • Luciano Rezzolla* (GU)
  • Subir Sarkar* (Oxford)
  • Ravi Sheth (UPenn)
  • Joe Silk* (IAP & JHU & Oxford)
  • Mark Trodden* (UPenn)
  • Hai-Bo Yu (UCR)

Organisational Committee:

  • Florian Kühnel (MPP & LMU) [Chair]
  • Lárus Thorlacius (UI)
  • Valentina Giangreco M. Puletti (UI)
  • David Kaiser (MIT)

AEI = Albert Einstein Institute
GRAPPA = Gravitation & Astroparticle Physics Amsterdam
GU = Goethe University Frankfurt
Harvard = Harvard University
IAP = Institut d’Astrophysique de Paris
ISU = Illinois State University
JHU = Johns Hopkins University
KCL = King’s College London
LMU = Ludwig-Maximilians-University Munich
MIT = Massachusetts Institute of Technology
MPA = Max Planck Institute for Astrophysics
MPE = Max Planck Institute for Extraterrestrial Physics
MPP = Max Planck Institute for Physics
NASA = National Aeronautics and Space Administration
NSU = Novosibirsk State University
NYU = New York University
OCA = Observatoire de la Côte d’Azur
QMUL = Queen Mary University of London
Oxford = University of Oxford
ROE = Royal Observatory, Edinburgh
UB = University at Buffalo
UCB = University of California, Berkeley
UCD = University of California, Davis
UCLA = University of California, Los Angeles
UCR =University of California, Riverside
UI = University of Iceland
ULB = Université Libre de Bruxelles
UM = University of Miami
Unife = University of Ferrara
UoM = University of Montpellier
UoP = University of Portsmouth
UPenn = University of Pennsylvania
UTAUS = The University of Texas at Austin
UvA = University of Amsterdam
UW = University of Wisconsin–Madison
Yale = Yale University

Conference Website

Massive Black Holes at EAS 2025, Cork, June 23-24, 2025

Symposium on "Understanding and Interpreting Massive Black Holes in the Early Universe" at EAS 2025 in Cork, organized by John Regan and Michael Tremmel. This symposium will take place across June 23rd and 24th (first two days or the symposium). Within this session there will be dedicated blocks focused on signatures of massive black hole binaries and the organizers encourage abstracts from the GW community in this direction.

Within EAS there are of course multiple other sessions and symposia focused on Massive Black Holes (e.g.Modelling the First Billion Years) all of which may appeal those with research interested in MBH(B)s.

Symposium Website

Summer School, ISAPP GRAVITATIONAL WAVES: from theory to detection, Vienna, July 7-18 2025

Registration is now open for the ISAPP Summer School "GRAVITATIONAL WAVES: from theory to detection", scheduled from July 7 to July 18, 2025, at the Erwin Schrödinger International Institute for Mathematics and Physics in Vienna.

This astroparticle physics graduate school will cover important and timely topics connected to gravitational waves taught by internationally renowned experts. The primary focus will be on understanding how gravitational waves emerge from the theory of general relativity and how these can be detected using modern technologies.

Core topics include:

Introduction to Gravitational Waves / Basic Theory
Sources of Gravitational Waves
Gravitational Wave Detectors
Data Analysis and Signal Processing
Gravitational Wave Cosmology
Stochastic Gravitational-Wave Background
Tests of General Relativity
Multimessenger Astronomy
Quantum Sensing in Gravitational Wave Detection
Public Outreach and Education

Confirmed lecturers include:

Clifford M. Will (University of Florida)
Michela Mapelli (University of Heidelberg)
Tania Regimbau (Annecy, LAPP)
Costantino Pacilio (University of Milano Bicocca)
Jessica Steinlechner (University of Maastricht)
Elena Cuoco (Bologna University)
Lijing Shao (KAVLI – Peking University)
Noemi Frusciante (University of Napoli)
Chiara Mingarelli (Yale University)
Gideon Koekoek (University of Maastricht)
Haocun Yu (University of Vienna)

Key Details:

Event Dates: July 7–18, 2025
Location: Erwin Schrödinger International Institute for Mathematics and Physics, Boltzmanngasse 9, 1090 Vienna, Austria
Registration: Now open at Indico Page
Registration Fee: None
Registration deadline: April 30th
Only up to 40 participants will be selected.

For inquiries, please contact the organising committee at isapp-2025-vienna(at)lists.oeaw.ac.at

We look forward to welcoming you to Vienna for an engaging and insightful school on gravitational waves.

School Website

Dark Matter, Dark Energy and the Cosmological Tensions, June 23-27, 2025 at Lake Como

The Schools are directed to PhD students and young Post-Docs in Physics, Astronomy and Mathematics who are interested in widening their knowledge in the fields of Physical Cosmology, Relativistic Astrophysics, General Relativity, Experimental Gravity and the Modern Quantum Theories of Gravitation. The Schools wish to introduce students to current problems, highlighting their importance and potential scientific impact. Lecturers will report on theoretical, observational and experimental aspects of the research, reviewing the latest achievements in the field.

This School

Today, cosmology and astrophysics are experiencing a dilemma: on one side, we have a very successful model, the ΛCDM model, able to adjust to almost all observations. On the other hand, such a model requires 96% of stuff about whose nature we have yet no certain knowledge: 26% of dark matter and 70% of dark energy, with only 4% left for the known matter, mostly in the form of hydrogen and helium nuclei. While dark matter seems to be necessary to explain the formation and the dynamics of galaxies and of larger structures, such as galaxy clusters and super clusters, dark energy is required to explain why our universe is in a state of accelerated expansion. The school aims at providing master’s and doctoral students and young post doctoral researchers with a perspective on the most important proposals on the nature of the dark components of the universe, not only from the theoretical point of view, but also from the experimental and observational one.

School Website

IAU Symposium 398: Compact Objects and Binaries in Dense Stellar Systems, June 16-20, 2025, Seoul

Cluster dynamics and the evolution of single and binary stars are closely intertwined, leading to different scenarios than those in the galactic field. Star clusters serve as dynamic factories for all these intriguing objects, and these topics are inherently interconnected. This symposium is intended to discuss the astrophysical origin of gravitational waves and to establish connections between theoretical and observational data concerning dynamics, populations, binaries, multiples, and compact objects (including binaries containing them) in dense star clusters. 2025 will be an excellent time to delve into the topic of star clusters and the roles of compact objects as it aligns with the release of significant results from the fourth observing run of LIGO/Virgo/KAGRA, which should provide crucial new constraints on the formation of gravitational wave sources. Additionally, numerous new discoveries of globular cluster pulsars are expected from large radio facilities such as MeerKAT, ASKAP, FAST, and others. New computer codes for dynamical simulations of dense star clusters are also emerging, and this symposium offers an excellent opportunity to discuss the latest results based on these codes.

Coordinating Divisions:

  • Division G Stars and Stellar Physics
  • Division D High Energy Phenomena and Fundamental Physics

Other Divisions:

  • Division H Interstellar Matter and Local Universe
  • Division J Galaxies and Cosmology

Scientific Organizing Committee

  • Hyung Mok Lee (Seoul National University) Chair
  • Rainer Spurzem (NAOC, Beijing; Heidelberg Univrsity) Co-Chair
  • Sourav Chatterjee (TIFR, Mumbai)
  • Michiko Fujii (University of Tokyo)
  • Di Li (Tsinghua University)
  • Antonino Milone (Padova University)
  • Fred Rasio (Northwestern University)
  • Anna Lisa Varri (Edinburgh University)

Local Organizing Committee

  • Chunglee Kim (Ewha Womans Univ.) Chair
  • Jongsuk Hong (Korea Astronomy and Space Science Institute)
  • Elahe Khalouei (Seoul National University)
  • Sungsoo S. Kim (Kyunghee University)
  • Joohee Lee (Seoul National University) Secretary

Conference Website